Home » Search

About fetch

41-50 of 200Refresh
JPA Doc
16

javax.persistence.criteria.Root

- intended type of the expression Returns: new expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name
JPA Doc
16

javax.persistence.criteria.SetJoin

expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using ... : the resulting fetch join Throws: IllegalArgumentException - if attribute of the given name does not
Forum
16

Fetching Collections Puzzle

If I dont declare explicitly the fetch strategy for "children" as FetchType.Eager, then how can I ... default JPA spec says that  colletions are to be lazy fetched. You can try this in a query.  "select n from Node n left outer join fetch n.children where ....." this will also fetch your collection
Forum
16

Query with FETCH JOIN returns multiple results instead of one.

jpqlResult = em.createQuery( "SELECT d FROM Demand d JOIN FETCH d.services WHERE d=:demand ... and fetch its services. Demand object is identified and found correctly, but as it is associated ... should return only one result, with fetched service sub-elements, shouldn't it? I am almost sure
Forum
16

Detaching objects after JOIN FETCH

Hi, I have a question about detaching objects after issuing query with JOIN FETCH. Let's say I ... { @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) List aClasses; } Now, I want to fetch all B classes with all A classes skipping lazy loading: select b from B b join fetch b
Forum
16

@OneToMany(fetch = FetchType.LAZY) list is always null

Hello. @OneToMany(fetch = FetchType.LAZY) doesn't work when using EJB or something else related ... ") private int id; @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) private List ... ; } // getters and setters } public class Parent { // ...id @OneToOne(fetch
Forum
16

Eager Fetch is not stable for collection or map types?

types is not stable, we lost them sometimes after JVM restarted. Eager fetch is properly set ... and fetch is: @Entity public class Game {     .......     @ElementCollection(fetch=FetchType ... .size() > 0) { Game g = result.get(0); logger.debug("[trace_fetch] ["+g.getMembers
Forum
16

Mapped By Fetch is very Slow

, go the MyEntity class and remove "mapped-by". You obtain 1 second max of query fetch. So my performance issue ... ) {    System.out.println("FAILED TO FETCH !");   } } Regards,  Xirt Thank you for this report ... if this query. Using the Enhancer can improve performance. Support, When you fetch 10 000 entities
Forum
16

Is there any restriction when using fetch=FetchType.LAZY ?

Hi, I came across a weird behavior when using fetch=FetchType.LAZY in a complex code. However I ... in object declaration @OneToMany(fetch=FetchType.EAGER, cascade = CascadeType.ALL) private LinkedList referencedObj; My test suite is running well. 2. However when I change fetch to LAZY
Forum
16

2.4.7 Fetch

am noticing in 2.4.7 that 'fetch' cannot be added to objectdb.conf so, wondering how to enable 'eager' fetching of collections ?   Dave   The question is unclear. Is it something new or different in version 2.4.7? Eager fetching has always been set by annotations or in queries, not in the configuration. dmoshal